Optical properties of multilayer bimetallic films obtained by laser deposition of colloidal particles

Antipov, A. A.; Аракелян, С. М.; Vartanyan, T. A.; Gerke, M. N.; Istratov, A. V.; Kutrovskaya, S.; Kucherik, A. O.; Osipov, A.

doi:10.1134/s0030400x16110035

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…Irradiation was carried out through the top electrode for 10 min. It should be noted that the top Au electrodes with a thickness of 20 nm were semitransparent for the laser wavelength used [57]. Under the influence of laser radiation, the structure heats up to ≈473 K.…”

Section: Siomentioning

confidence: 99%

Silicon-Compatible Memristive Devices Tailored by Laser and Thermal Treatments

Koryazhkina

Филатов

Тихов

et al. 2022

JLPEA

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Nowadays, memristors are of considerable interest to researchers and engineers due to the promise they hold for the creation of power-efficient memristor-based information or computing systems. In particular, this refers to memristive devices based on the resistive switching phenomenon, which in most cases are fabricated in the form of metal–insulator–metal structures. At the same time, the demand for compatibility with the standard fabrication process of complementary metal–oxide semiconductors makes it relevant from a practical point of view to fabricate memristive devices directly on a silicon or SOI (silicon on insulator) substrate. Here we have investigated the electrical characteristics and resistive switching of SiOx- and SiNx-based memristors fabricated on SOI substrates and subjected to additional laser treatment and thermal treatment. The investigated memristors do not require electroforming and demonstrate a synaptic type of resistive switching. It is found that the parameters of resistive switching of SiOx- and SiNx-based memristors on SOI substrates are remarkably improved. In particular, the laser treatment gives rise to a significant increase in the hysteresis loop in I–V curves of SiNx-based memristors. Moreover, for SiOx-based memristors, the thermal treatment used after the laser treatment produces a notable decrease in the resistive switching voltage.

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Section: Siomentioning

confidence: 99%

Silicon-Compatible Memristive Devices Tailored by Laser and Thermal Treatments

Koryazhkina

Филатов

Тихов

et al. 2022

JLPEA

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“…At the beginning, island films [8,9,13] are found to be formed. This result is typically obtained after as few as 5 laser passages at a scanning speed of 1.2 mm/s (Figure 4(a)).…”

Section: Laser-assisted Formation Of the Bimetallic Au:ag Granularmentioning

confidence: 99%

“…For this, Finite Difference Time Domain method (FDTD) is used [8,16]. In this case, the optical properties of metals are described by Drude-Lorentz model [17,18].…”

Section: Fdtd Modeling Of the Effects Of The Particle Spacing And Thementioning

confidence: 99%

“…In the proposed method, colloidal nanoparticles are deposited on glass by using local laser heating leading to the particle movement toward the substrate [9]. Based on our previous studies [8,9], here we present the results of much more detailed investigations focused not only on the influence of such parameters as the distance between the deposited particles and the number of the deposited layers, but also on the film deposition process and, in particular, on the connections with the resulting morphology and optical properties of the films. We believe that the results of this much more systematic study provide a more complete understanding of both laserassisted film formation processes and of their properties.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, new synthesis methods of random structures are under development and currently attract particular interest of the researchers working in various fields ranging from photonics to medicine and biology. One of such new methods was recently developed [8,9] enabling not only an efficient deposition of metallic nanoparticles on glass substrates, but also a control over their optical properties by changing the thickness of thin films and spacing between the particles.…”

Section: Introductionmentioning

confidence: 99%

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Structure and Morphology Effects on the Optical Properties of Bimetallic Nanoparticle Films Laser Deposited on a Glass Substrate

Kucherik

Arakelyan

Kutrovskaya

et al. 2017

Journal of Nanomaterials

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Moving nanosecond laser system is used for laser-assisted thermodiffusion deposition of metallic nanoparticles from water-based colloidal solutions. The results obtained for both gold and silver nanoparticles show that film morphology strongly depends on laser scanning speed and the number of passages. We show, furthermore, the possibility of producing bimetallic Au:Ag thin films by laser irradiation of the mixed solutions. As a result of several laser scans, granular nanometric films are found to grow with a well-controlled composition, thickness, and morphology. By changing laser scanning parameters, film morphology can be varied from island structures to quasi-periodic arrays. The optical properties of the deposited structures are found to depend on the film composition, thickness, and mean separation between the particles. The transparency spectra of the deposited films are shown to be defined by their morphology.

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